Something New

This does not happen very often, but I recently saw something in a casino poker game that I had NEVER seen before.

A player is about to be the button when he sees another seat open up. He asks the dealer if he can move to that open seat. The dealer says go ahead. The player moves all his chips to the new seat ----- and takes the button with him.

Wow, what are some people thinking? I quietly watched to see what was going to happen (this could be good) -- but the dealer quickly put the dealer button back where it belonged before dealing any cards.